If a competitor launches a strikingly similar promotion to yours, what precise data point should you *immediatelyanalyze in your Promotion Manager to determine the optimal counter-strategy?

If a competitor launches a strikingly similar promotion to yours, the most precise data point to immediately analyze in your Promotion Manager is the *'conversion rate lift' attributed to your current promotion, segmented by the specific items overlapping with the competitor's offer. Conversion rate lift measures the increase in the percentage of listing views that result in a sale, directly attributable to the promotion. Simply looking at overall sales volume isn't sufficient, as external factors can influence sales. Segmenting the data by *overlapping items is critical because it isolates the impact of the competitor's promotion on *those specific products where you are directly competing. If the competitor’s promotion is causing a significant *decreasein your conversion rate lift for overlapping items, it indicates that their offer is more compelling to buyers. This necessitates a counter-strategy. If your conversion rate lift remains stable or only slightly decreases, it suggests that your existing promotion is still effective, and a drastic change may not be necessary. Further segmentation could involve analyzing conversion rates across different customer segments or geographic regions to identify specific areas where the competitor's promotion is having the greatest impact. Understanding the specific *magnitude of the conversion rate lift change, and the precise items affected, allows you to formulate a targeted response, such as adjusting your pricing, enhancing your offer, or refining your marketing efforts to regain competitive advantage. A response based on overall sales numbers alone would be less effective and potentially wasteful.